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openrisc: use qspinlocks and qrwlocks

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Enable OpenRISC to use qspinlocks and qrwlocks for upcoming SMP support.

Signed-off-by: Stafford Horne <shorne@gmail.com>
This commit is contained in:
Stafford Horne 2017-03-24 07:13:03 +09:00
parent 489e0f802d
commit b5f8217615
4 changed files with 24 additions and 1 deletions
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2
arch/openrisc/Kconfig
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@ -28,6 +28,8 @@ config OPENRISC
select OR1K_PIC
select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1
select NO_BOOTMEM
select ARCH_USE_QUEUED_SPINLOCKS
select ARCH_USE_QUEUED_RWLOCKS
config CPU_BIG_ENDIAN
def_bool y

4
arch/openrisc/include/asm/Kbuild
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@ -28,6 +28,10 @@ generic-y += module.h
generic-y += pci.h
generic-y += percpu.h
generic-y += preempt.h
generic-y += qspinlock_types.h
generic-y += qspinlock.h
generic-y += qrwlock_types.h
generic-y += qrwlock.h
generic-y += sections.h
generic-y += segment.h
generic-y += string.h

12
arch/openrisc/include/asm/spinlock.h
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@ -19,6 +19,16 @@
#ifndef __ASM_OPENRISC_SPINLOCK_H
#define __ASM_OPENRISC_SPINLOCK_H
#error "or32 doesn't do SMP yet"
#include <asm/qspinlock.h>
#include <asm/qrwlock.h>
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
#define arch_spin_relax(lock) cpu_relax()
#define arch_read_relax(lock) cpu_relax()
#define arch_write_relax(lock) cpu_relax()
#endif

7
arch/openrisc/include/asm/spinlock_types.h Normal file
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@ -0,0 +1,7 @@
#ifndef _ASM_OPENRISC_SPINLOCK_TYPES_H
#define _ASM_OPENRISC_SPINLOCK_TYPES_H
#include <asm/qspinlock_types.h>
#include <asm/qrwlock_types.h>
#endif /* _ASM_OPENRISC_SPINLOCK_TYPES_H */